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Finding the Fourth Proportional to 335,049.70, 502,663.65 and 145,428.70

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Solution

The fourth proportional to 335,049.70, 502,663.65 and 145,428.70 is: 218,181.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,049.70 : 502,663.65 = 145,428.70 : x
  2. Step 2: Convert to fraction form
    335,049.70/502,663.65 = 145,428.70/x
  3. Step 3: Cross multiply
    335,049.70x = 502,663.65 × 145,428.70
  4. Step 4: Simplify right side
    335,049.70x = 73,101,721,156.76
  5. Step 5: Solve for x
    x = 73,101,721,156.76/335,049.70
  6. Step 6: Final answer
    x = 218,181.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.